Climatological Report (Daily)
Issued by NWS Upton, NY
Issued by NWS Upton, NY
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790
CDUS41 KOKX 152038
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
438 PM EDT TUE SEP 15 2026
...................................
...THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 15 2026...
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1963 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 71 215 PM 84 2008 75 -4 82
MINIMUM 52 518 AM 40 1975 59 -7 63
AVERAGE 62 67 -5 73
PRECIPITATION (IN)
TODAY 0.00 3.12 1966 0.12 -0.12 0.00
MONTH TO DATE 4.21 1.72 2.49 1.24
SINCE SEP 1 4.21 1.72 2.49 1.24
SINCE JAN 1 35.84 32.02 3.82 25.02
SNOWFALL (IN)
TODAY 0.0 MM MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE SEP 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 3 1 2 0
MONTH TO DATE 3 8 -5 2
SINCE SEP 1 3 8 -5 2
SINCE JUL 1 3 11 -8 2
COOLING
TODAY 0 4 -4 8
MONTH TO DATE 92 75 17 58
SINCE SEP 1 92 75 17 58
SINCE JAN 1 965 839 126 986
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NE (60)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION E (70)
AVERAGE WIND SPEED 5.5
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 600 AM
LOWEST 45 1200 PM
AVERAGE 64
..........................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 88 1998
MINIMUM TEMPERATURE (F) 59 44 1964
SUNRISE AND SUNSET
SEPTEMBER 15 2026.....SUNRISE 633 AM EDT SUNSET 701 PM EDT
SEPTEMBER 16 2026.....SUNRISE 634 AM EDT SUNSET 700 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$